It can be summed up in four points, namely, economic demand, theoretical support, technical support and timing factors.

From the end of 19 to the beginning of the 20th century, the United States actually took advantage of the second industrial revolution to quickly surpass Britain and become the world's largest economic power. A large number of American goods are going overseas. How to protect overseas economic interests and routes?

This leads to the demand of naval development.

Secondly, Colonel Mahan put forward the theory of sea power by summing up the history at that time, which theoretically explained that the navy served the economy and was the integration of military and economy, which inspired the economic circles to support the military and formed an integration.

Third, the technological progress at that time enabled the latecomers to catch up with the pioneers by leaps and bounds.

In addition, there is a very important reason is geopolitics. At that time, the British economy began to decline, paying attention to the conflict with Russia and Germany. The United States did not suppress enough, and the United States was able to take advantage of the situation.

Second, the enlightenment to China's naval construction.

The navy is a gold eater, or it will bring down the economy. Therefore, the development of the navy, especially the marine power, must match the economic development, otherwise it will fall into the tragedy of Germany in World War I and Japan in World War II, and the national economy will be dragged down.

Theory first, we should increase theoretical research, and don't be confused by the general kelp bullshit theory, which would be a disaster.

We should seize the opportunity, transfer contradictions, be patient, and never have a head-on conflict with MD too early.